Rotatable drill pipes and standpipes

Rotatable drill pipes and standpipes are made according to GOST 6238-77.

Rotatable drill pipes are defined for concentration, conservation and further transportation of core up on the surface, and also for maintenance of course of the hole during drilling.

Standpipes are defined for prevention of caving in unstable rocks, closure of discharge and lost circulation horizons and for other purposes.

Core drilling is one of the widest method of borehole attack.

Basic advantages of core drilling.

• Universalism, or the opportunity to attack boreholes almost in each type of rocks;
• The opportunity to get core with minor prolapsed bedding;
• Comparatively deep drilling;
• Availability of rig fleet, mobile and stationary;
• Good exploration of drilling technology etc.

Rotatable drill pipes and standpipes are used for well drilling, search and prospecting of solid minerals and water, geotechnical investigations and building, for well casing, core reception and maintenance of course of the hole during drilling. Rotatable drill pipes and standpipes are connected with pins, which have outer thread on both ends.

Technical characteristics

Section "Rotatable drill and casing pipes"